Total KMnO4 consumptions by lignin in both pulp and effluent were measured and the difference of this value from the KMn该方法对溶出残馀木质素的氧化结果分析发现其呈明显3个阶段：第一段木质素氧化的当量电荷数约4~5/木质素单元；木质素总氧化电荷数大约为9/木质素单元。